Beck, T., Werner, V, Pietralla, N., Bhike, M., Cooper, N., Friman-Gayer, U., Isaak, J., Jolos, R., V, Kleemann, J., Papst, O., Tornow, W., Bernards, C., Crider, B. P., Ilieva, R. S., Loher, B., Mihai, C., Naqvi, F., Pascu, S., Peters, E. E., Prados-Estevez, F. M., Ross, T. J., Savran, D., Vanhoy, J. R. and Zilges, A. (2020). Delta K=0 M1 Excitation Strength of the Well-Deformed Nucleus Dy-164 from K Mixing. Phys. Rev. Lett., 125 (9). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The size of a Delta K = 0 M1 excitation strength has been determined for the first time in a predominantly axially deformed even-even nucleus. It has been obtained from the observation of a rare K-mixing situation between two close-lying J(pi) = 1(+) states of the nucleus Dy-164 with components characterized by intrinsic projection quantum numbers K = 0 and K = 1. Nuclear resonance fluorescence induced by quasimonochromatic linearly polarized gamma-ray beams provided evidence for K mixing of the 1(+) states at 3159.1(3) and 3173.6(3) keV in excitation energy from their gamma-decay branching ratios into the ground-state band. The Delta K = 0 transition strength of B(M1;0(1)(+) -> 1(K=0)(+) = 0.008(1)mu(2)(N) was inferred from a mixing analysis of their M1 transition rates into the ground-state band. It is in agreement with predictions from the quasiparticle phonon nuclear model. This determination represents first experimental information on the M1 excitation strength of a nuclear quantum state with a negative R-symmetry quantum number.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Beck, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Werner, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pietralla, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bhike, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cooper, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Friman-Gayer, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isaak, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jolos, R., VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kleemann, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Papst, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tornow, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bernards, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crider, B. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ilieva, R. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Loher, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mihai, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Naqvi, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pascu, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Peters, E. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prados-Estevez, F. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ross, T. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Savran, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vanhoy, J. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zilges, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-322637
DOI: 10.1103/PhysRevLett.125.092501
Journal or Publication Title: Phys. Rev. Lett.
Volume: 125
Number: 9
Date: 2020
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
DIPOLE EXCITATIONS; SCISSORS MODE; STATES; SYSTEMATICSMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/32263

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